c. 1985 Black J12 be Multicoated???

I don't have the J12, but I have a black J8 from 76 and a J9 in 42mm mount and both appear to be multicoated. When held to a light source at oblique angles I can see at least 3 distinct colors.
 
Multicoated

Multicoated

Does multi-coated means all elements are coated or they have a several different coatings on front and rear or allof the above.
 
JBRIGHT99 said:
Does multi-coated means all elements are coated or they have a several different coatings on front and rear or allof the above.
Click to expand...

Multicoated lenses have more than one layer of coating on at least one surface. fully coated lenses have one layer of coating on each air to glass surface. Fully multi coated is when every air to glass surface is multicoated.

Most coated lenses are fully coated, unless someone is really, really cheap.
 
A Soivet, multicoated interchangeable lens in rangefinder mount is not typical. Most of late lenses for SLRs were indeed MC, and some fixed-lens RFs featured such lenses too, but e.g. none of the Kiev RF lenses ever was.
 
Though I also doubt about multicoating, my 85/2 J-9 in Kiev mount, from 1960, produced at KMZ, shows a blue coating going in the greens with light purple and grey reflections in the internal elements. Maybe it was reassembled? It doesn't seems the lens was ever touched.
 
Different color reflection do not mean multicoating. It can be single-coated, but each coating is different thickness to keep color rendition neutral. If all coatings were of the same thickness then the lens would prefer one wavelength of light over the other wavelengths.
 
You must log in or register to reply here.
Back
Top Bottom